Vehicle tire pressure sensing device

Details Vehicle tire pressure sensing device Vehicle tire pressure sensing device

1974-03-05

1976-02-10

Caldwell, John W.

Communications: electrical

Selective

Having indication or alarm

731463, 200 6125, 200 83A, 340 57, B60C 2300, H01H 3524

Patent

active

039380769

ABSTRACT:
A casing is disposed in an air pressure chamber of a pneumatic tubeless tire and carries therein a switch cooperating with an alarm to produce an alarm signal upon a fall in the air pressure in the tire below a predetermined value. The switch is controlled by a leaf spring which is deformable by the movements, in one direction, of a flexible diaphragm deformable in response to variations in the air pressure in the tire. The leaf spring is returnable by its resilient force upon the movements, in another direction, of the diaphragm. The casing is fixedly mounted on a wheel rim through a projection extending outwardly of the tire from the casing through the rim.

REFERENCES:
patent: 2655573 (1953-10-01), Szwargulski et al.
patent: 3093812 (1963-06-01), Brown
patent: 3155938 (1964-11-01), Meyers
patent: 3296395 (1967-01-01), Fraser
patent: 3501959 (1970-03-01), Womack
patent: 3710314 (1973-01-01), Bell et al.
patent: 3860772 (1975-01-01), Byrd
patent: 3864537 (1975-02-01), Fiore

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